CAS: 69806-50-4; Fluazifop-Butyl

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CAS号80776-65-4 n-butyl 2-[4-(5... | CAS号81947-94-6 n-butyl 2-(4-hy... | CAS号52334-81-3 2-氯-5-三氟甲基吡啶

📜N-Butyl 2-[4-(5-Trifluoromethylpyrid-2-Yloxy)Phenoxy]Acrylate置于钯体系中,用 正丁醇 作为反应溶剂,化学反应生成 吡氟禾草灵
参考文献:A Process For Preparing 2-Pyridinyloxyphenoxy-Lower-Alkanoates
标题:A Process For Preparing 2-Pyridinyloxyphenoxy-Lower-Alkanoates
摘要:这项发明涉及一种制备吡啶氧基苯氧基丙烷羧酸及其衍生物的过程,以及在该过程中有用的中间体.

专利信息

专利号:US-4658031-A
优先权日:1982-10-07
标 题:Synthesis of 2-substituted-5-methyl-pyridines and intermediates therefor
发明人：HARTMANN LUDWIG A; STEPHEN JOHN F
权利人:ICI AMERICA INC
摘要:A process for the synthesis of compounds which are known intermediates for the pyridyloxyphenoxy herbicies as well as intermediates used in the process. Propionaldehyde and an acrylic compound, two readily available starting materials, are reacted to form a 2-formylpentanoic compound which is cyclized to a dihydro pyridone which is then oxidized to the 2-hydroxy pyridine. The hydroxypyridine may be halogenated to a 2-halopyridine.

专利号:US-4584380-A
优先权日:1982-10-07
标 题:Synthesis of 2-substituted-5-methyl-pyridines and intermediates therefor
发明人：HARTMANN LUDWIG A; STEPHEN JOHN F
权利人:ICI AMERICA INC
摘要:A process for the synthesis of compounds which are known intermediates for the pyridyloxyphenoxy herbicides as well as intermediates used in the process. Propionaldehyde and an acrylic compound, two readily available starting materials, are reacted to form a 2-formylpentanoic compound which is cyclized to a dihydro pyridone which is then oxidized to the 2-hydroxy pyridine. The hydroxypyridine may be halogenated to a 2-halopyridine.

专利号:US-4473696-A
优先权日:1982-10-07
标题:Synthesis of 2-substituted-5-methyl-pyridines
发明人：HARTMANN LUDWIG A; STEPHEN JOHN F
权利人:ICI AMERICA INC
摘要:A process for the synthesis of compounds which are known intermediates for the pyridyloxyphenoxy herbicides as well as intermediates used in the process. Propionaldehyde and an acrylic compound, two readily available starting materials, are reacted to form a 2-formylpentanoic compound which is cyclized to a dihydro pyridone which is then oxidized to the 2-hydroxy pyridine. The hydroxypyridine may be halogenated to a 2-halopyridine.

专利号:US-4687854-A
优先权日:1982-10-07
标 题 :Bispiperidone precursor of 2-substituted-5-methyl-pyridines
发明人：HARTMANN LUDWIG A; STEPHEN JOHN F
权利人:ICI AMERICA INC
摘要:A process for the synthesis of compounds which are known intermediates for the pyridyloxyphenoxy herbicides as well as intermediates used in the process. Propionaldehyde and an acrylic compound, two radily available starting materials, are reacted to form a 2-formylpentanoic compound which is cyclized to a dihydro pyridone which is then oxidized to the 2-hydroxy pyridine. The hydroxypyridine may be halogenated to a 2-halopyridine.

专利号:US-4612377-A
优先权日:1983-03-30
标题:Preparation of 2-chloro-5-methylpyridine
发明人：OSBORNE ROBERT; BAILEY KEVIN D
权利人:ICI PLC
摘要:A 2-oxo-5-methyl-5,6-dihalopiperidine is contacted in a high boiling solvent, preferably trichlorobenzene, with a stoichiometric excess, up to 70 mole % excess, of a chlorinating agent, preferably phosphorus oxychloride or phosgene, at an elevated temperature between 80 DEG and 130 DEG C. The solution of 2-chloro-5-methylpyridine so obtained may be used directly for further chlorination to form 2-chloro-5-trichloromethylpyridine with, for example, chlorine gas in the presence of a free radical initiator. This chemical intermediate is useful in the synthesis of certain herbicidal compounds.

专利号:US-5053516-A
优先权日:1984-05-23
标题 :Synthesis of 2-substituted-5-methylpyridines from methylcyclobutanecarbonitrile, valeronitrile and pentenonitrile intermediates
发明人：HARTMANN LUDWIG A; STEPHEN JOHN F
权利人:ICI AMERICA INC
摘要:3-Methyl-2-alkylamino-1-halo-1-cyano cyclobutanes are cleaved under acid conditions to form 2-halo-4-formylvaleronitrile and 4-formyl-2-pentenonitrile which can be cyclized to form 2-substituted-5-methylpyridine derivatives. These pyridine derivatives are useful as starting materials in the manufacture of herbicides such as fluazifop-butyl.